unsigned char seg7[10]= { 0x7E,   //0
                          0x48,   //1
                          0x7D,   //2
                          0x6D,   //3
                          0x4B,   //4
                          0x67,   //5
                          0x77,   //6
                          0x4C,   //7
                          0x7F,   //8
                          0x4F    //9
                        };
